You take a trip to a star located 1,000 light-years away and return. you travel at an average speed of 0.99c. hint: the time dilation formula is: t′=t1−(vc)2−−−−−−−−√. about how many years will pass on earth while you are gone?

70712.44 ly

Using the following time dilation formula:

where is the time measured in the moving frame, is the speed of the moving frame,   is the speed of light and is time measured in other frame.

Inserting the values:

Therefore, when a trip to a star 1000 ly years away is made with speed 0.99 c, 70712.44 ly would have passed on Earth.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

it takes about 30 days for it to break down